Fuel cell device

Abstract

A fuel cell device includes a fuel cell body, a case and a pin having one end contacting a part of the fuel cell body. A through hole is formed in the case. The through hole penetrates the case from the outside to the inside. The pin is inserted in the through hole and provided with a sealing member formed on at least a part of an outer circumferential surface. The through hole has a constant inner diameter from a position inside the case to a border with the outside. In the through hole, an inner diameter between a portion of the constant inner diameter and the border with the outside is larger than the constant inner diameter. The pin has an opposite end located inside the through hole in a portion from an end of the portion of the constant inner diameter to the border with the outside.

What is claimed is: 
     
       1. A fuel cell device comprising:
 a fuel cell body having a plurality of stacked unit cells; 
 a case housing the fuel cell body inside the case; and 
 a pin having one end contacting a part of the fuel cell body to fix the fuel cell body, wherein 
 a through hole is formed in the case, the through hole penetrating the case from the outside to the inside of the case, 
 the pin is inserted in the through hole and provided with a sealing member formed on at least a part of an outer circumferential surface of the pin, 
 the through hole has a constant inner diameter for a predetermined distance from a position inside the case to a border with the outside of the case, 
 in the through hole, an inner diameter between a portion of the constant inner diameter and the border with the outside of the case is larger than the constant inner diameter, 
 in the through hole, at least a part of the sealing member is located at an edge of the portion of the constant inner diameter in an outbound direction of the case, 
 the pin has the other end located inside the through hole in a portion between an end of the portion of the constant inner diameter in the outbound direction of the case and the border with the outside of the case, and 
 the pin is configured as a set screw without a head. 
 
     
     
       2. The fuel cell device according to  claim 1 , wherein
 a screw thread is formed on each of the outer circumferential surface of the pin and an inner circumferential surface of the portion of the constant inner diameter, and 
 the pin and the portion of the constant inner diameter are threadedly engaged with each other. 
 
     
     
       3. The fuel cell device according to  claim 1 , wherein
 the through hole is formed in a lateral surface portion of the case facing a surface of the fuel cell body at one end in a stacking direction, and 
 the one end of the pin contacts the surface of the fuel cell body at the one end.